Move four matchsticks to the below square to form three squares?

What building has the most stories?

By moving exactly three matchsticks can you make the below equation true.It can be solved by 3 ways.

What number divided by 4 is the same as that number minus 4?

People put me on the table and cut me but do not eat me. What am I?

A plane crashed between the border of Mexico and America. Where do you bury the survivors?

Here is a mathematical expression that also secretly tells a movie name. What movie is that?

I am a type of food that is often found in the fridge and can be white in colour. What I am?
Hint 1: I am a dairy product.
Hint 2: You can spread me on the bread.

If you go to the movies and you're paying, is it cheaper to take one friend to the movies twice, or two friends to the movies at the same time?

Why do you find that most of the buildings are deprived of the 13th floor?